/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:43:58,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:43:58,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:43:58,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:43:58,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:43:58,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:43:58,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:43:58,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:43:58,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:43:58,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:43:58,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:43:58,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:43:58,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:43:58,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:43:58,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:43:58,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:43:58,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:43:58,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:43:58,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:43:58,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:43:58,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:43:58,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:43:58,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:43:58,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:43:58,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:43:58,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:43:58,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:43:58,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:43:58,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:43:58,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:43:58,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:43:58,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:43:58,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:43:58,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:43:58,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:43:58,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:43:58,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:43:58,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:43:58,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:43:58,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:43:58,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:43:58,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 22:43:58,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:43:58,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:43:58,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:43:58,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:43:58,597 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:43:58,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:43:58,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:43:58,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:43:58,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:43:58,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:43:58,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:43:58,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:43:58,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:43:58,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:43:58,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:43:58,599 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:43:58,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:43:58,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:43:58,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:43:58,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:43:58,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:43:58,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:43:58,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:43:58,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:43:58,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:43:58,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:43:58,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:43:58,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:43:58,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:43:58,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:43:58,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:43:58,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:43:58,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:43:58,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:43:58,995 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:43:58,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47.c [2020-10-26 22:43:59,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb583ce54/b57302013ee2452b9c2cd740ab5b5e86/FLAGf026e18c2 [2020-10-26 22:43:59,904 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:43:59,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label47.c [2020-10-26 22:43:59,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb583ce54/b57302013ee2452b9c2cd740ab5b5e86/FLAGf026e18c2 [2020-10-26 22:44:00,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb583ce54/b57302013ee2452b9c2cd740ab5b5e86 [2020-10-26 22:44:00,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:44:00,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:44:00,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:44:00,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:44:00,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:44:00,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:44:00" (1/1) ... [2020-10-26 22:44:00,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9562b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:00, skipping insertion in model container [2020-10-26 22:44:00,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:44:00" (1/1) ... [2020-10-26 22:44:00,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:44:00,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:44:00,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:44:00,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:44:01,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:44:01,178 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:44:01,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01 WrapperNode [2020-10-26 22:44:01,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:44:01,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:44:01,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:44:01,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:44:01,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (1/1) ... [2020-10-26 22:44:01,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (1/1) ... [2020-10-26 22:44:01,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (1/1) ... [2020-10-26 22:44:01,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (1/1) ... [2020-10-26 22:44:01,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (1/1) ... [2020-10-26 22:44:01,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (1/1) ... [2020-10-26 22:44:01,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (1/1) ... [2020-10-26 22:44:01,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:44:01,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:44:01,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:44:01,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:44:01,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:44:01,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:44:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:44:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:44:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:44:01,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:44:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:44:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:44:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:44:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:44:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:44:01,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:44:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:44:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:44:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:44:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:44:01,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:44:01,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:44:01,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:44:01,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:44:03,715 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:44:03,715 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:44:03,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:44:03 BoogieIcfgContainer [2020-10-26 22:44:03,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:44:03,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:44:03,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:44:03,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:44:03,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:44:00" (1/3) ... [2020-10-26 22:44:03,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1702aee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:44:03, skipping insertion in model container [2020-10-26 22:44:03,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:44:01" (2/3) ... [2020-10-26 22:44:03,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1702aee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:44:03, skipping insertion in model container [2020-10-26 22:44:03,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:44:03" (3/3) ... [2020-10-26 22:44:03,727 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label47.c [2020-10-26 22:44:03,738 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:44:03,744 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:44:03,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:44:03,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:44:03,800 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:44:03,800 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:44:03,800 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:44:03,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:44:03,801 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:44:03,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:44:03,801 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:44:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:44:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 22:44:03,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:03,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:03,834 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:03,840 INFO L82 PathProgramCache]: Analyzing trace with hash 166506440, now seen corresponding path program 1 times [2020-10-26 22:44:03,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:03,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100495245] [2020-10-26 22:44:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:04,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:04,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:04,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 22:44:04,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:04,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-26 22:44:04,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:44:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:44:04,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-26 22:44:04,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:44:04,815 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:44:04,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:04,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:04,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:04,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 22:44:04,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:44:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:44:04,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100495245] [2020-10-26 22:44:04,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:44:04,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:44:04,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663356707] [2020-10-26 22:44:04,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:44:04,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:44:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:44:04,890 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-26 22:44:05,101 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 22:44:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:08,041 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-26 22:44:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:44:08,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-26 22:44:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:08,058 INFO L225 Difference]: With dead ends: 793 [2020-10-26 22:44:08,059 INFO L226 Difference]: Without dead ends: 432 [2020-10-26 22:44:08,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:44:08,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-26 22:44:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-26 22:44:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-26 22:44:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-26 22:44:08,154 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 42 [2020-10-26 22:44:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:08,154 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-26 22:44:08,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:44:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-26 22:44:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-26 22:44:08,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:08,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:08,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:44:08,161 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:08,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:08,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2056477508, now seen corresponding path program 1 times [2020-10-26 22:44:08,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:08,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645149871] [2020-10-26 22:44:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:08,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:10,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:10,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 22:44:10,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:10,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1906 [2020-10-26 22:44:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:44:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:44:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:44:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:44:10,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:10,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:10,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:10,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 22:44:10,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:44:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:44:10,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:10,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:44:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 22:44:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:10,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:44:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:44:10,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645149871] [2020-10-26 22:44:10,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:44:10,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:44:10,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911584544] [2020-10-26 22:44:10,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:10,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:10,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:10,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:10,601 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 7 states. [2020-10-26 22:44:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:14,049 INFO L93 Difference]: Finished difference Result 1277 states and 1862 transitions. [2020-10-26 22:44:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:44:14,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-26 22:44:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:14,063 INFO L225 Difference]: With dead ends: 1277 [2020-10-26 22:44:14,063 INFO L226 Difference]: Without dead ends: 857 [2020-10-26 22:44:14,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-26 22:44:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 821. [2020-10-26 22:44:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-26 22:44:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1098 transitions. [2020-10-26 22:44:14,150 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1098 transitions. Word has length 114 [2020-10-26 22:44:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:14,153 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1098 transitions. [2020-10-26 22:44:14,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1098 transitions. [2020-10-26 22:44:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 22:44:14,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:14,166 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:14,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:44:14,167 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:14,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:14,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1200421172, now seen corresponding path program 1 times [2020-10-26 22:44:14,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:14,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710569323] [2020-10-26 22:44:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:14,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:15,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:15,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:16,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:16,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 22:44:16,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:44:16,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1851 [2020-10-26 22:44:16,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:44:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:44:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:44:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:16,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:16,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:16,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:16,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:44:16,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:44:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:16,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:16,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:16,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:44:16,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-26 22:44:16,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:44:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:44:16,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710569323] [2020-10-26 22:44:16,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:16,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:44:16,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264216929] [2020-10-26 22:44:16,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:16,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:16,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:16,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:16,633 INFO L87 Difference]: Start difference. First operand 821 states and 1098 transitions. Second operand 7 states. [2020-10-26 22:44:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:19,601 INFO L93 Difference]: Finished difference Result 2067 states and 2723 transitions. [2020-10-26 22:44:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:44:19,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-26 22:44:19,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:19,609 INFO L225 Difference]: With dead ends: 2067 [2020-10-26 22:44:19,610 INFO L226 Difference]: Without dead ends: 1252 [2020-10-26 22:44:19,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:44:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2020-10-26 22:44:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1215. [2020-10-26 22:44:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-26 22:44:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1532 transitions. [2020-10-26 22:44:19,660 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1532 transitions. Word has length 122 [2020-10-26 22:44:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:19,660 INFO L481 AbstractCegarLoop]: Abstraction has 1215 states and 1532 transitions. [2020-10-26 22:44:19,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:19,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1532 transitions. [2020-10-26 22:44:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-26 22:44:19,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:19,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:19,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:44:19,663 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:19,664 INFO L82 PathProgramCache]: Analyzing trace with hash -505272133, now seen corresponding path program 1 times [2020-10-26 22:44:19,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:19,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554186619] [2020-10-26 22:44:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:20,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:20,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-26 22:44:20,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:20,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-26 22:44:20,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:44:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 22:44:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:20,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:20,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:20,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:20,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:20,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:44:20,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:20,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:20,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:20,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 22:44:20,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:20,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:20,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:44:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:44:20,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554186619] [2020-10-26 22:44:20,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:20,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:44:20,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419930457] [2020-10-26 22:44:20,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:44:20,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:20,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:44:20,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:44:20,567 INFO L87 Difference]: Start difference. First operand 1215 states and 1532 transitions. Second operand 5 states. [2020-10-26 22:44:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:23,124 INFO L93 Difference]: Finished difference Result 2073 states and 2819 transitions. [2020-10-26 22:44:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:44:23,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-26 22:44:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:23,143 INFO L225 Difference]: With dead ends: 2073 [2020-10-26 22:44:23,143 INFO L226 Difference]: Without dead ends: 1638 [2020-10-26 22:44:23,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:44:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2020-10-26 22:44:23,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1629. [2020-10-26 22:44:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-10-26 22:44:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2092 transitions. [2020-10-26 22:44:23,224 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2092 transitions. Word has length 173 [2020-10-26 22:44:23,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:23,226 INFO L481 AbstractCegarLoop]: Abstraction has 1629 states and 2092 transitions. [2020-10-26 22:44:23,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:44:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2092 transitions. [2020-10-26 22:44:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-26 22:44:23,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:23,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:23,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:44:23,236 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:23,237 INFO L82 PathProgramCache]: Analyzing trace with hash -544229670, now seen corresponding path program 1 times [2020-10-26 22:44:23,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:23,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671683472] [2020-10-26 22:44:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:24,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:24,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-26 22:44:24,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-10-26 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:44:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:24,783 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:44:24,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:24,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:24,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:24,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:44:24,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:24,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:25,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:25,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:25,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-26 22:44:25,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:44:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:25,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:25,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:25,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:44:25,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 22:44:25,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:44:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:25,372 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:44:25,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671683472] [2020-10-26 22:44:25,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:25,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:44:25,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696037523] [2020-10-26 22:44:25,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:44:25,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:25,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:44:25,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:44:25,375 INFO L87 Difference]: Start difference. First operand 1629 states and 2092 transitions. Second operand 8 states. [2020-10-26 22:44:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:28,628 INFO L93 Difference]: Finished difference Result 3479 states and 4696 transitions. [2020-10-26 22:44:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:44:28,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-26 22:44:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:28,645 INFO L225 Difference]: With dead ends: 3479 [2020-10-26 22:44:28,645 INFO L226 Difference]: Without dead ends: 2234 [2020-10-26 22:44:28,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:44:28,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-10-26 22:44:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2217. [2020-10-26 22:44:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-10-26 22:44:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2963 transitions. [2020-10-26 22:44:28,717 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2963 transitions. Word has length 230 [2020-10-26 22:44:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:28,717 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 2963 transitions. [2020-10-26 22:44:28,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:44:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2963 transitions. [2020-10-26 22:44:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-26 22:44:28,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:28,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:28,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:44:28,722 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:28,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2033232818, now seen corresponding path program 1 times [2020-10-26 22:44:28,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:28,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359249637] [2020-10-26 22:44:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:28,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:31,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:31,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-26 22:44:31,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2412 [2020-10-26 22:44:31,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:44:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:44:31,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 22:44:31,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:31,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 22:44:31,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:44:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:31,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:31,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:31,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:31,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-26 22:44:31,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:44:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:31,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:32,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:32,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:44:32,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 22:44:32,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:44:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:44:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 54 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:44:32,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359249637] [2020-10-26 22:44:32,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:32,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:44:32,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939346679] [2020-10-26 22:44:32,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:44:32,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:32,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:44:32,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:44:32,252 INFO L87 Difference]: Start difference. First operand 2217 states and 2963 transitions. Second operand 9 states. [2020-10-26 22:44:36,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:36,171 INFO L93 Difference]: Finished difference Result 4143 states and 5908 transitions. [2020-10-26 22:44:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:44:36,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 231 [2020-10-26 22:44:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:36,195 INFO L225 Difference]: With dead ends: 4143 [2020-10-26 22:44:36,195 INFO L226 Difference]: Without dead ends: 2890 [2020-10-26 22:44:36,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:44:36,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-10-26 22:44:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2830. [2020-10-26 22:44:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2830 states. [2020-10-26 22:44:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3742 transitions. [2020-10-26 22:44:36,290 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3742 transitions. Word has length 231 [2020-10-26 22:44:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:36,291 INFO L481 AbstractCegarLoop]: Abstraction has 2830 states and 3742 transitions. [2020-10-26 22:44:36,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:44:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3742 transitions. [2020-10-26 22:44:36,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-26 22:44:36,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:36,295 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:36,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:44:36,296 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:36,296 INFO L82 PathProgramCache]: Analyzing trace with hash 603662550, now seen corresponding path program 1 times [2020-10-26 22:44:36,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:36,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711721813] [2020-10-26 22:44:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:36,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:38,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:38,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-26 22:44:38,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2212 [2020-10-26 22:44:38,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:44:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:44:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:38,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:38,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:38,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:38,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:44:38,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:38,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:38,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:38,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:38,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:38,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:38,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:38,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:38,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 22:44:38,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:44:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:38,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:39,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:39,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:39,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:44:39,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:39,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-26 22:44:39,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:44:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:44:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:44:39,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711721813] [2020-10-26 22:44:39,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:39,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883893572] [2020-10-26 22:44:39,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:39,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:39,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:39,462 INFO L87 Difference]: Start difference. First operand 2830 states and 3742 transitions. Second operand 7 states. [2020-10-26 22:44:39,602 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 22:44:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:42,941 INFO L93 Difference]: Finished difference Result 6596 states and 9264 transitions. [2020-10-26 22:44:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:44:42,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-26 22:44:42,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:42,968 INFO L225 Difference]: With dead ends: 6596 [2020-10-26 22:44:42,968 INFO L226 Difference]: Without dead ends: 4150 [2020-10-26 22:44:42,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2020-10-26 22:44:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 4024. [2020-10-26 22:44:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4024 states. [2020-10-26 22:44:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 5123 transitions. [2020-10-26 22:44:43,103 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 5123 transitions. Word has length 232 [2020-10-26 22:44:43,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:43,104 INFO L481 AbstractCegarLoop]: Abstraction has 4024 states and 5123 transitions. [2020-10-26 22:44:43,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 5123 transitions. [2020-10-26 22:44:43,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-26 22:44:43,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:43,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:43,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:44:43,109 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:43,110 INFO L82 PathProgramCache]: Analyzing trace with hash 605511370, now seen corresponding path program 1 times [2020-10-26 22:44:43,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:43,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472390281] [2020-10-26 22:44:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:45,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:45,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-26 22:44:45,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:45,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1909 [2020-10-26 22:44:45,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:45,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:44:45,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 22:44:45,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:45,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:45,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:44:45,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:45,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:45,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:45,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:45,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:45,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 22:44:45,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:44:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:45,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:45,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:44:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 22:44:45,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:44:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:44:45,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472390281] [2020-10-26 22:44:45,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:45,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:45,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146747467] [2020-10-26 22:44:45,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:45,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:45,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:45,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:45,677 INFO L87 Difference]: Start difference. First operand 4024 states and 5123 transitions. Second operand 7 states. [2020-10-26 22:44:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:49,194 INFO L93 Difference]: Finished difference Result 9115 states and 11863 transitions. [2020-10-26 22:44:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:44:49,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-26 22:44:49,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:49,226 INFO L225 Difference]: With dead ends: 9115 [2020-10-26 22:44:49,226 INFO L226 Difference]: Without dead ends: 5475 [2020-10-26 22:44:49,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:49,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2020-10-26 22:44:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 5419. [2020-10-26 22:44:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-10-26 22:44:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 6884 transitions. [2020-10-26 22:44:49,387 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 6884 transitions. Word has length 238 [2020-10-26 22:44:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:49,388 INFO L481 AbstractCegarLoop]: Abstraction has 5419 states and 6884 transitions. [2020-10-26 22:44:49,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 6884 transitions. [2020-10-26 22:44:49,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-26 22:44:49,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:49,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:49,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:44:49,394 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:49,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:49,395 INFO L82 PathProgramCache]: Analyzing trace with hash 225252034, now seen corresponding path program 1 times [2020-10-26 22:44:49,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:49,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223557453] [2020-10-26 22:44:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:49,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-26 22:44:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-26 22:44:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:44:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 22:44:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:50,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:50,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:50,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:50,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:50,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:44:50,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:50,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:50,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:44:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:50,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:50,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:50,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:50,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:50,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:44:50,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 22:44:50,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:44:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 22:44:50,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223557453] [2020-10-26 22:44:50,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:50,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:44:50,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973905407] [2020-10-26 22:44:50,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:44:50,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:50,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:44:50,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:44:50,470 INFO L87 Difference]: Start difference. First operand 5419 states and 6884 transitions. Second operand 6 states. [2020-10-26 22:44:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:54,482 INFO L93 Difference]: Finished difference Result 9133 states and 11762 transitions. [2020-10-26 22:44:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:44:54,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 242 [2020-10-26 22:44:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:54,511 INFO L225 Difference]: With dead ends: 9133 [2020-10-26 22:44:54,511 INFO L226 Difference]: Without dead ends: 5469 [2020-10-26 22:44:54,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:44:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2020-10-26 22:44:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 5415. [2020-10-26 22:44:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5415 states. [2020-10-26 22:44:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 6836 transitions. [2020-10-26 22:44:54,655 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 6836 transitions. Word has length 242 [2020-10-26 22:44:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:54,655 INFO L481 AbstractCegarLoop]: Abstraction has 5415 states and 6836 transitions. [2020-10-26 22:44:54,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:44:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 6836 transitions. [2020-10-26 22:44:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-26 22:44:54,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:54,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:54,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:44:54,668 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:54,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1539655978, now seen corresponding path program 1 times [2020-10-26 22:44:54,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:54,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178136429] [2020-10-26 22:44:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:55,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:59,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:59,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:59,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-26 22:44:59,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:44:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 22:44:59,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 22:44:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:44:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 293 [2020-10-26 22:44:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:59,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:59,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:59,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 22:44:59,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:44:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:59,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:00,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:00,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:45:00,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-26 22:45:00,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:00,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:45:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:00,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:45:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:00,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:00,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:00,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:45:00,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:00,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-26 22:45:00,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:00,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:00,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:00,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:45:00,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:45:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:01,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:01,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 22:45:01,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 22:45:01,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 22:45:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 256 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 22:45:01,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178136429] [2020-10-26 22:45:01,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:01,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:01,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359674049] [2020-10-26 22:45:01,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:45:01,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:01,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:45:01,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:45:01,623 INFO L87 Difference]: Start difference. First operand 5415 states and 6836 transitions. Second operand 8 states. [2020-10-26 22:45:04,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:04,530 INFO L93 Difference]: Finished difference Result 9731 states and 12733 transitions. [2020-10-26 22:45:04,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:45:04,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 325 [2020-10-26 22:45:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:04,553 INFO L225 Difference]: With dead ends: 9731 [2020-10-26 22:45:04,554 INFO L226 Difference]: Without dead ends: 4700 [2020-10-26 22:45:04,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:45:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2020-10-26 22:45:04,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 4603. [2020-10-26 22:45:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4603 states. [2020-10-26 22:45:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 5619 transitions. [2020-10-26 22:45:04,690 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 5619 transitions. Word has length 325 [2020-10-26 22:45:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:04,690 INFO L481 AbstractCegarLoop]: Abstraction has 4603 states and 5619 transitions. [2020-10-26 22:45:04,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:45:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 5619 transitions. [2020-10-26 22:45:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-26 22:45:04,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:04,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:04,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:45:04,701 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:04,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1636205006, now seen corresponding path program 1 times [2020-10-26 22:45:04,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:04,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357813095] [2020-10-26 22:45:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:07,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:07,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-26 22:45:07,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:45:07,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2753 [2020-10-26 22:45:07,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:07,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:45:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:45:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 22:45:07,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:07,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:07,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:07,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:07,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:07,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:45:07,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:07,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:07,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:07,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:07,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:07,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:45:07,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 22:45:07,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:45:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:07,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:07,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:45:07,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:07,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 22:45:07,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:45:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:07,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:45:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:07,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:07,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:45:07,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 22:45:07,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:07,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:45:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 235 proven. 35 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-26 22:45:08,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357813095] [2020-10-26 22:45:08,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:08,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:08,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643798912] [2020-10-26 22:45:08,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:08,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:08,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:08,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:08,155 INFO L87 Difference]: Start difference. First operand 4603 states and 5619 transitions. Second operand 7 states. [2020-10-26 22:45:12,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:12,315 INFO L93 Difference]: Finished difference Result 10089 states and 12448 transitions. [2020-10-26 22:45:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:45:12,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-26 22:45:12,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:12,338 INFO L225 Difference]: With dead ends: 10089 [2020-10-26 22:45:12,338 INFO L226 Difference]: Without dead ends: 5870 [2020-10-26 22:45:12,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:45:12,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2020-10-26 22:45:12,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 5403. [2020-10-26 22:45:12,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2020-10-26 22:45:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 6484 transitions. [2020-10-26 22:45:12,477 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 6484 transitions. Word has length 329 [2020-10-26 22:45:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:12,478 INFO L481 AbstractCegarLoop]: Abstraction has 5403 states and 6484 transitions. [2020-10-26 22:45:12,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 6484 transitions. [2020-10-26 22:45:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-26 22:45:12,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:12,490 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:12,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:45:12,491 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1390232242, now seen corresponding path program 1 times [2020-10-26 22:45:12,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:12,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403807008] [2020-10-26 22:45:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:12,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:13,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:17,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:17,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-26 22:45:17,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:45:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 22:45:17,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:45:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:45:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:17,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:17,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:17,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:17,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:45:17,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:17,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:17,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:17,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:17,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:45:17,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:45:17,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:17,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:45:17,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:17,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:45:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:45:18,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 22:45:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:45:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:18,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:45:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:18,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:18,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:45:18,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:18,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:45:18,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:45:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:18,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 177 proven. 73 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-26 22:45:18,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403807008] [2020-10-26 22:45:18,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:18,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:18,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78546556] [2020-10-26 22:45:18,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:18,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:18,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:18,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:18,226 INFO L87 Difference]: Start difference. First operand 5403 states and 6484 transitions. Second operand 7 states. [2020-10-26 22:45:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:22,667 INFO L93 Difference]: Finished difference Result 12830 states and 15759 transitions. [2020-10-26 22:45:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:45:22,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-26 22:45:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:22,697 INFO L225 Difference]: With dead ends: 12830 [2020-10-26 22:45:22,697 INFO L226 Difference]: Without dead ends: 7819 [2020-10-26 22:45:22,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:45:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7819 states. [2020-10-26 22:45:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7819 to 7544. [2020-10-26 22:45:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7544 states. [2020-10-26 22:45:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7544 states to 7544 states and 8840 transitions. [2020-10-26 22:45:22,872 INFO L78 Accepts]: Start accepts. Automaton has 7544 states and 8840 transitions. Word has length 329 [2020-10-26 22:45:22,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:22,873 INFO L481 AbstractCegarLoop]: Abstraction has 7544 states and 8840 transitions. [2020-10-26 22:45:22,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:22,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7544 states and 8840 transitions. [2020-10-26 22:45:22,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-26 22:45:22,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:22,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:22,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:45:22,888 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:22,888 INFO L82 PathProgramCache]: Analyzing trace with hash 40539974, now seen corresponding path program 1 times [2020-10-26 22:45:22,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:22,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741051692] [2020-10-26 22:45:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:25,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-26 22:45:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:45:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2187 [2020-10-26 22:45:25,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:45:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:45:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 22:45:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:25,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:25,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:25,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:25,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:25,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:45:25,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:25,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:25,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:25,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:45:25,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:45:25,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:25,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:45:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:25,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:25,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:45:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 22:45:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:45:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:45:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:25,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:25,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:45:25,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-26 22:45:25,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:45:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 238 proven. 35 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-26 22:45:25,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741051692] [2020-10-26 22:45:25,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:25,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:45:25,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800810442] [2020-10-26 22:45:25,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:45:25,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:25,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:45:25,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:45:25,924 INFO L87 Difference]: Start difference. First operand 7544 states and 8840 transitions. Second operand 6 states. [2020-10-26 22:45:29,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:29,067 INFO L93 Difference]: Finished difference Result 16300 states and 19397 transitions. [2020-10-26 22:45:29,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:45:29,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 356 [2020-10-26 22:45:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:29,101 INFO L225 Difference]: With dead ends: 16300 [2020-10-26 22:45:29,101 INFO L226 Difference]: Without dead ends: 9150 [2020-10-26 22:45:29,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:45:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9150 states. [2020-10-26 22:45:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9150 to 7741. [2020-10-26 22:45:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7741 states. [2020-10-26 22:45:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7741 states to 7741 states and 9078 transitions. [2020-10-26 22:45:29,285 INFO L78 Accepts]: Start accepts. Automaton has 7741 states and 9078 transitions. Word has length 356 [2020-10-26 22:45:29,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:29,286 INFO L481 AbstractCegarLoop]: Abstraction has 7741 states and 9078 transitions. [2020-10-26 22:45:29,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:45:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7741 states and 9078 transitions. [2020-10-26 22:45:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-26 22:45:29,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:29,301 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:29,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:45:29,301 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:29,302 INFO L82 PathProgramCache]: Analyzing trace with hash 540257246, now seen corresponding path program 1 times [2020-10-26 22:45:29,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:29,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686636447] [2020-10-26 22:45:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:32,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:34,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:34,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-26 22:45:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:45:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 22:45:34,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:45:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 22:45:34,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:34,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:34,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:34,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:34,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:34,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:45:34,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:34,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:34,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:34,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:34,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:34,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:34,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:45:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:34,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:45:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:45:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:45:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:34,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:34,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:45:34,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:34,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:45:34,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:45:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:34,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 183 proven. 79 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-26 22:45:34,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686636447] [2020-10-26 22:45:34,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:34,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:34,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665577143] [2020-10-26 22:45:34,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:34,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:34,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:34,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:34,962 INFO L87 Difference]: Start difference. First operand 7741 states and 9078 transitions. Second operand 7 states. [2020-10-26 22:45:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:38,860 INFO L93 Difference]: Finished difference Result 17218 states and 21068 transitions. [2020-10-26 22:45:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:45:38,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-26 22:45:38,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:38,892 INFO L225 Difference]: With dead ends: 17218 [2020-10-26 22:45:38,893 INFO L226 Difference]: Without dead ends: 9871 [2020-10-26 22:45:38,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:45:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9871 states. [2020-10-26 22:45:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9871 to 9677. [2020-10-26 22:45:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9677 states. [2020-10-26 22:45:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9677 states to 9677 states and 11321 transitions. [2020-10-26 22:45:39,130 INFO L78 Accepts]: Start accepts. Automaton has 9677 states and 11321 transitions. Word has length 356 [2020-10-26 22:45:39,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:39,130 INFO L481 AbstractCegarLoop]: Abstraction has 9677 states and 11321 transitions. [2020-10-26 22:45:39,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand 9677 states and 11321 transitions. [2020-10-26 22:45:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-26 22:45:39,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:39,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:39,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:45:39,146 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:39,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:39,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1574188810, now seen corresponding path program 1 times [2020-10-26 22:45:39,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:39,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777134425] [2020-10-26 22:45:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:40,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-26 22:45:40,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-26 22:45:40,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 22:45:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:45:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-26 22:45:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:40,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:40,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:40,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:40,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:45:40,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:40,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:40,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:40,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:40,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:45:40,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:40,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:45:40,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:45:40,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:45:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:40,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 22:45:40,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-26 22:45:40,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:45:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 22:45:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 180 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:45:41,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777134425] [2020-10-26 22:45:41,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:41,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:45:41,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985393222] [2020-10-26 22:45:41,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:45:41,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:41,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:45:41,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:45:41,096 INFO L87 Difference]: Start difference. First operand 9677 states and 11321 transitions. Second operand 8 states. [2020-10-26 22:45:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:45,665 INFO L93 Difference]: Finished difference Result 21124 states and 25175 transitions. [2020-10-26 22:45:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:45:45,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2020-10-26 22:45:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:45,697 INFO L225 Difference]: With dead ends: 21124 [2020-10-26 22:45:45,698 INFO L226 Difference]: Without dead ends: 13971 [2020-10-26 22:45:45,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:45:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13971 states. [2020-10-26 22:45:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13971 to 13909. [2020-10-26 22:45:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13909 states. [2020-10-26 22:45:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13909 states to 13909 states and 16305 transitions. [2020-10-26 22:45:46,140 INFO L78 Accepts]: Start accepts. Automaton has 13909 states and 16305 transitions. Word has length 355 [2020-10-26 22:45:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:46,142 INFO L481 AbstractCegarLoop]: Abstraction has 13909 states and 16305 transitions. [2020-10-26 22:45:46,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:45:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 13909 states and 16305 transitions. [2020-10-26 22:45:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-26 22:45:46,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:46,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:46,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:45:46,159 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:46,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:46,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2102484940, now seen corresponding path program 1 times [2020-10-26 22:45:46,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:46,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314669620] [2020-10-26 22:45:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:46,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:48,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:48,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-26 22:45:48,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:45:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2533 [2020-10-26 22:45:48,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-26 22:45:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 22:45:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:48,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:48,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:48,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:45:48,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:48,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:45:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 22:45:49,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:45:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:49,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:49,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:45:49,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:49,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:45:49,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-26 22:45:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-26 22:45:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:49,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:49,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:49,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:45:49,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 22:45:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:45:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-26 22:45:49,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314669620] [2020-10-26 22:45:49,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:49,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:49,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754747342] [2020-10-26 22:45:49,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:49,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:49,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:49,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:49,469 INFO L87 Difference]: Start difference. First operand 13909 states and 16305 transitions. Second operand 7 states. [2020-10-26 22:45:51,468 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:45:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:53,301 INFO L93 Difference]: Finished difference Result 25762 states and 30226 transitions. [2020-10-26 22:45:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:45:53,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-26 22:45:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:53,338 INFO L225 Difference]: With dead ends: 25762 [2020-10-26 22:45:53,338 INFO L226 Difference]: Without dead ends: 14356 [2020-10-26 22:45:53,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:45:53,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14356 states. [2020-10-26 22:45:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14356 to 14296. [2020-10-26 22:45:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14296 states. [2020-10-26 22:45:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 16701 transitions. [2020-10-26 22:45:53,629 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 16701 transitions. Word has length 372 [2020-10-26 22:45:53,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:53,629 INFO L481 AbstractCegarLoop]: Abstraction has 14296 states and 16701 transitions. [2020-10-26 22:45:53,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 16701 transitions. [2020-10-26 22:45:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-26 22:45:53,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:53,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:53,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:45:53,647 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1828274202, now seen corresponding path program 1 times [2020-10-26 22:45:53,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:53,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969732205] [2020-10-26 22:45:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-26 22:45:58,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:45:58,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 22:45:58,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:45:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 406 [2020-10-26 22:45:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:58,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:58,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:58,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:58,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:45:58,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:59,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:59,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:45:59,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:59,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 22:45:59,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:45:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:45:59,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:45:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:59,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:45:59,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-26 22:45:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:59,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:45:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-26 22:45:59,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969732205] [2020-10-26 22:45:59,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:59,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:45:59,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213904229] [2020-10-26 22:45:59,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:45:59,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:59,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:45:59,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:45:59,774 INFO L87 Difference]: Start difference. First operand 14296 states and 16701 transitions. Second operand 9 states. [2020-10-26 22:45:59,950 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-26 22:46:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:04,534 INFO L93 Difference]: Finished difference Result 28838 states and 34119 transitions. [2020-10-26 22:46:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:46:04,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 399 [2020-10-26 22:46:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:04,573 INFO L225 Difference]: With dead ends: 28838 [2020-10-26 22:46:04,573 INFO L226 Difference]: Without dead ends: 17264 [2020-10-26 22:46:04,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-26 22:46:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17264 states. [2020-10-26 22:46:04,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17264 to 17198. [2020-10-26 22:46:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17198 states. [2020-10-26 22:46:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17198 states to 17198 states and 20129 transitions. [2020-10-26 22:46:04,892 INFO L78 Accepts]: Start accepts. Automaton has 17198 states and 20129 transitions. Word has length 399 [2020-10-26 22:46:04,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:04,893 INFO L481 AbstractCegarLoop]: Abstraction has 17198 states and 20129 transitions. [2020-10-26 22:46:04,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:46:04,893 INFO L276 IsEmpty]: Start isEmpty. Operand 17198 states and 20129 transitions. [2020-10-26 22:46:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-26 22:46:04,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:04,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:04,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:46:04,913 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:04,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:04,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1938374002, now seen corresponding path program 1 times [2020-10-26 22:46:04,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:04,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146554083] [2020-10-26 22:46:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:05,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:10,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-26 22:46:10,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:46:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 22:46:10,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:46:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:46:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:46:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:10,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:46:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:46:10,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:46:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:10,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:10,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:46:10,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 22:46:10,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:46:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:46:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:46:10,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:46:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:46:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-26 22:46:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:10,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:10,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:46:10,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:46:10,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:46:10,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 289 proven. 72 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-26 22:46:10,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146554083] [2020-10-26 22:46:10,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:10,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:10,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305831929] [2020-10-26 22:46:10,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:10,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:10,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:10,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:10,889 INFO L87 Difference]: Start difference. First operand 17198 states and 20129 transitions. Second operand 7 states. [2020-10-26 22:46:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:14,512 INFO L93 Difference]: Finished difference Result 28848 states and 33818 transitions. [2020-10-26 22:46:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:46:14,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-26 22:46:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:14,545 INFO L225 Difference]: With dead ends: 28848 [2020-10-26 22:46:14,546 INFO L226 Difference]: Without dead ends: 17458 [2020-10-26 22:46:14,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:46:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17458 states. [2020-10-26 22:46:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17458 to 17390. [2020-10-26 22:46:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17390 states. [2020-10-26 22:46:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17390 states to 17390 states and 20346 transitions. [2020-10-26 22:46:14,861 INFO L78 Accepts]: Start accepts. Automaton has 17390 states and 20346 transitions. Word has length 414 [2020-10-26 22:46:14,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:14,862 INFO L481 AbstractCegarLoop]: Abstraction has 17390 states and 20346 transitions. [2020-10-26 22:46:14,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17390 states and 20346 transitions. [2020-10-26 22:46:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-26 22:46:14,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:14,894 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:14,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:46:14,894 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:14,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1907566349, now seen corresponding path program 1 times [2020-10-26 22:46:14,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:14,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968502376] [2020-10-26 22:46:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:16,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:16,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:16,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-26 22:46:16,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:46:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-26 22:46:16,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:16,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:46:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:16,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:16,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:16,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:16,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:16,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:46:16,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:16,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:16,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:16,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:16,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:16,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 22:46:16,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:16,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:16,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 22:46:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:16,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:46:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:16,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:16,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:16,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:16,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:46:16,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:16,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 22:46:16,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:46:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:16,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:17,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-26 22:46:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:17,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:46:17,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:17,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 22:46:17,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:46:17,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-26 22:46:17,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968502376] [2020-10-26 22:46:17,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:17,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:46:17,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894733018] [2020-10-26 22:46:17,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:46:17,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:17,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:46:17,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:46:17,208 INFO L87 Difference]: Start difference. First operand 17390 states and 20346 transitions. Second operand 5 states. [2020-10-26 22:46:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:18,830 INFO L93 Difference]: Finished difference Result 29965 states and 34993 transitions. [2020-10-26 22:46:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:46:18,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 419 [2020-10-26 22:46:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:18,858 INFO L225 Difference]: With dead ends: 29965 [2020-10-26 22:46:18,858 INFO L226 Difference]: Without dead ends: 16073 [2020-10-26 22:46:18,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:46:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16073 states. [2020-10-26 22:46:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16073 to 16009. [2020-10-26 22:46:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16009 states. [2020-10-26 22:46:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16009 states to 16009 states and 18491 transitions. [2020-10-26 22:46:19,250 INFO L78 Accepts]: Start accepts. Automaton has 16009 states and 18491 transitions. Word has length 419 [2020-10-26 22:46:19,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:19,251 INFO L481 AbstractCegarLoop]: Abstraction has 16009 states and 18491 transitions. [2020-10-26 22:46:19,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:46:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 16009 states and 18491 transitions. [2020-10-26 22:46:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-26 22:46:19,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:19,272 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:19,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:46:19,272 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:19,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2026984709, now seen corresponding path program 1 times [2020-10-26 22:46:19,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:19,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434883744] [2020-10-26 22:46:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:22,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:24,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-26 22:46:24,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 22:46:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 22:46:24,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 22:46:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:24,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 448 [2020-10-26 22:46:24,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:24,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:46:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:24,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:24,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:46:24,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:24,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-26 22:46:24,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:46:24,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:25,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:46:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:25,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:25,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:46:25,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 22:46:25,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:46:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:46:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:25,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-26 22:46:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:25,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:46:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 22:46:25,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:46:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 575 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-26 22:46:25,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434883744] [2020-10-26 22:46:25,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:25,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:46:25,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211550224] [2020-10-26 22:46:25,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:46:25,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:25,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:46:25,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:46:25,834 INFO L87 Difference]: Start difference. First operand 16009 states and 18491 transitions. Second operand 10 states. [2020-10-26 22:46:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:30,400 INFO L93 Difference]: Finished difference Result 21134 states and 24415 transitions. [2020-10-26 22:46:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 22:46:30,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 439 [2020-10-26 22:46:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:30,442 INFO L225 Difference]: With dead ends: 21134 [2020-10-26 22:46:30,443 INFO L226 Difference]: Without dead ends: 21131 [2020-10-26 22:46:30,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-26 22:46:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21131 states. [2020-10-26 22:46:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21131 to 20271. [2020-10-26 22:46:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20271 states. [2020-10-26 22:46:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20271 states to 20271 states and 23487 transitions. [2020-10-26 22:46:30,767 INFO L78 Accepts]: Start accepts. Automaton has 20271 states and 23487 transitions. Word has length 439 [2020-10-26 22:46:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:30,768 INFO L481 AbstractCegarLoop]: Abstraction has 20271 states and 23487 transitions. [2020-10-26 22:46:30,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:46:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 20271 states and 23487 transitions. [2020-10-26 22:46:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-26 22:46:30,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:30,786 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:30,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:46:30,786 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:30,787 INFO L82 PathProgramCache]: Analyzing trace with hash -940047204, now seen corresponding path program 1 times [2020-10-26 22:46:30,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:30,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199483339] [2020-10-26 22:46:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:30,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:32,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:35,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:35,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-26 22:46:35,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 22:46:35,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 22:46:35,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:46:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 341 [2020-10-26 22:46:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:36,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:36,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:36,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:46:36,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:36,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:46:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:36,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:46:36,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 22:46:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 22:46:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:46:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:36,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:46:36,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 22:46:36,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:46:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:46:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-26 22:46:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:37,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:37,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:37,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:46:37,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:37,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 22:46:37,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:46:37,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 282 proven. 236 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-26 22:46:37,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199483339] [2020-10-26 22:46:37,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:37,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:46:37,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098204854] [2020-10-26 22:46:37,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:46:37,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:37,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:46:37,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:46:37,598 INFO L87 Difference]: Start difference. First operand 20271 states and 23487 transitions. Second operand 11 states. [2020-10-26 22:46:40,980 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-10-26 22:46:41,436 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-26 22:46:42,642 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-26 22:46:43,656 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:46:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:44,023 INFO L93 Difference]: Finished difference Result 36152 states and 43112 transitions. [2020-10-26 22:46:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 22:46:44,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 448 [2020-10-26 22:46:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:44,080 INFO L225 Difference]: With dead ends: 36152 [2020-10-26 22:46:44,080 INFO L226 Difference]: Without dead ends: 20409 [2020-10-26 22:46:44,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2020-10-26 22:46:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20409 states. [2020-10-26 22:46:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20409 to 19879. [2020-10-26 22:46:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19879 states. [2020-10-26 22:46:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19879 states to 19879 states and 22968 transitions. [2020-10-26 22:46:44,424 INFO L78 Accepts]: Start accepts. Automaton has 19879 states and 22968 transitions. Word has length 448 [2020-10-26 22:46:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:44,424 INFO L481 AbstractCegarLoop]: Abstraction has 19879 states and 22968 transitions. [2020-10-26 22:46:44,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:46:44,425 INFO L276 IsEmpty]: Start isEmpty. Operand 19879 states and 22968 transitions. [2020-10-26 22:46:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-26 22:46:44,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:44,438 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:44,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:46:44,438 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:44,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1665938052, now seen corresponding path program 1 times [2020-10-26 22:46:44,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:44,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746945046] [2020-10-26 22:46:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:44,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:44,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:47,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:47,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:49,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:49,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-26 22:46:49,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:46:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 22:46:49,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:46:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 432 [2020-10-26 22:46:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:49,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:49,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:49,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:49,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:46:49,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:49,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 22:46:49,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:46:49,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:46:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:49,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:49,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:46:49,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 22:46:49,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:46:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:46:49,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:50,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:46:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:50,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:50,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:46:50,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-26 22:46:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 22:46:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-26 22:46:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:50,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:50,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:46:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 22:46:50,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-26 22:46:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 153 proven. 10 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-10-26 22:46:50,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746945046] [2020-10-26 22:46:50,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:50,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:46:50,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735288839] [2020-10-26 22:46:50,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:46:50,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:50,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:46:50,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:46:50,664 INFO L87 Difference]: Start difference. First operand 19879 states and 22968 transitions. Second operand 9 states. [2020-10-26 22:46:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:57,537 INFO L93 Difference]: Finished difference Result 41995 states and 49009 transitions. [2020-10-26 22:46:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 22:46:57,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 462 [2020-10-26 22:46:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:57,594 INFO L225 Difference]: With dead ends: 41995 [2020-10-26 22:46:57,594 INFO L226 Difference]: Without dead ends: 25790 [2020-10-26 22:46:57,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-26 22:46:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25790 states. [2020-10-26 22:46:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25790 to 23947. [2020-10-26 22:46:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23947 states. [2020-10-26 22:46:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23947 states to 23947 states and 27673 transitions. [2020-10-26 22:46:57,961 INFO L78 Accepts]: Start accepts. Automaton has 23947 states and 27673 transitions. Word has length 462 [2020-10-26 22:46:57,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:57,961 INFO L481 AbstractCegarLoop]: Abstraction has 23947 states and 27673 transitions. [2020-10-26 22:46:57,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:46:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 23947 states and 27673 transitions. [2020-10-26 22:46:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-26 22:46:57,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:57,975 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:57,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:46:57,975 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:57,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:57,976 INFO L82 PathProgramCache]: Analyzing trace with hash 998015362, now seen corresponding path program 1 times [2020-10-26 22:46:57,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:57,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074721894] [2020-10-26 22:46:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:58,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:00,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:01,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:01,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-26 22:47:01,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:47:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3743 [2020-10-26 22:47:01,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:47:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 22:47:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:01,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:01,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:47:01,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:01,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:02,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:02,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:47:02,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:47:02,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:47:02,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:47:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:02,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:02,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 22:47:02,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 22:47:02,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 22:47:02,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:02,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-26 22:47:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:02,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:02,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 22:47:02,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 22:47:02,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-26 22:47:02,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 212 proven. 108 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-26 22:47:02,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074721894] [2020-10-26 22:47:02,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:02,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:47:02,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427206821] [2020-10-26 22:47:02,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:47:02,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:02,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:47:02,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:47:02,868 INFO L87 Difference]: Start difference. First operand 23947 states and 27673 transitions. Second operand 8 states. [2020-10-26 22:47:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:08,073 INFO L93 Difference]: Finished difference Result 54639 states and 63588 transitions. [2020-10-26 22:47:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:47:08,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 464 [2020-10-26 22:47:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:08,154 INFO L225 Difference]: With dead ends: 54639 [2020-10-26 22:47:08,155 INFO L226 Difference]: Without dead ends: 31076 [2020-10-26 22:47:08,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:47:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31076 states. [2020-10-26 22:47:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31076 to 29257. [2020-10-26 22:47:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29257 states. [2020-10-26 22:47:08,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29257 states to 29257 states and 33569 transitions. [2020-10-26 22:47:08,737 INFO L78 Accepts]: Start accepts. Automaton has 29257 states and 33569 transitions. Word has length 464 [2020-10-26 22:47:08,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:08,737 INFO L481 AbstractCegarLoop]: Abstraction has 29257 states and 33569 transitions. [2020-10-26 22:47:08,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:47:08,738 INFO L276 IsEmpty]: Start isEmpty. Operand 29257 states and 33569 transitions. [2020-10-26 22:47:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-26 22:47:08,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:08,754 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:08,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:47:08,754 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:08,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash 607237483, now seen corresponding path program 1 times [2020-10-26 22:47:08,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:08,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691692739] [2020-10-26 22:47:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:13,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:13,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-26 22:47:13,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:47:13,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 22:47:13,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:47:13,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:47:13,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:47:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:14,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:14,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:14,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:14,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:14,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 22:47:14,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:14,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:14,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:47:14,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 22:47:14,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:14,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:47:14,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:47:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:14,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:14,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:47:14,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:14,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 22:47:14,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:14,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:14,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:47:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-26 22:47:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:14,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:14,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:47:14,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 22:47:14,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:47:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 283 proven. 69 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-26 22:47:14,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691692739] [2020-10-26 22:47:14,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:14,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:14,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681172265] [2020-10-26 22:47:14,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:14,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:14,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:14,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:14,834 INFO L87 Difference]: Start difference. First operand 29257 states and 33569 transitions. Second operand 7 states. [2020-10-26 22:47:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:19,592 INFO L93 Difference]: Finished difference Result 57042 states and 65428 transitions. [2020-10-26 22:47:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:47:19,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 468 [2020-10-26 22:47:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:19,641 INFO L225 Difference]: With dead ends: 57042 [2020-10-26 22:47:19,642 INFO L226 Difference]: Without dead ends: 31081 [2020-10-26 22:47:19,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:47:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31081 states. [2020-10-26 22:47:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31081 to 30197. [2020-10-26 22:47:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30197 states. [2020-10-26 22:47:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30197 states to 30197 states and 34421 transitions. [2020-10-26 22:47:20,041 INFO L78 Accepts]: Start accepts. Automaton has 30197 states and 34421 transitions. Word has length 468 [2020-10-26 22:47:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:20,041 INFO L481 AbstractCegarLoop]: Abstraction has 30197 states and 34421 transitions. [2020-10-26 22:47:20,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 30197 states and 34421 transitions. [2020-10-26 22:47:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-26 22:47:20,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:20,060 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:20,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:47:20,060 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:20,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:20,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1414032370, now seen corresponding path program 1 times [2020-10-26 22:47:20,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:20,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098564749] [2020-10-26 22:47:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:20,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:23,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 22:47:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:25,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:25,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:25,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:25,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:25,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:47:25,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:25,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:25,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:47:25,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:25,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 22:47:25,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:25,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:47:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:47:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:25,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:25,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:25,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:47:25,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:25,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 22:47:25,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 22:47:25,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:25,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-26 22:47:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:25,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:25,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:25,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:47:25,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 22:47:25,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 22:47:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-26 22:47:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:25,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-26 22:47:25,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 22:47:25,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:47:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 257 proven. 163 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-26 22:47:25,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098564749] [2020-10-26 22:47:25,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:25,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:25,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497195947] [2020-10-26 22:47:25,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:25,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:25,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:25,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:25,947 INFO L87 Difference]: Start difference. First operand 30197 states and 34421 transitions. Second operand 7 states. [2020-10-26 22:47:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:29,867 INFO L93 Difference]: Finished difference Result 64622 states and 74894 transitions. [2020-10-26 22:47:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:47:29,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 496 [2020-10-26 22:47:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:29,932 INFO L225 Difference]: With dead ends: 64622 [2020-10-26 22:47:29,932 INFO L226 Difference]: Without dead ends: 34809 [2020-10-26 22:47:29,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:47:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34809 states. [2020-10-26 22:47:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34809 to 34397. [2020-10-26 22:47:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34397 states. [2020-10-26 22:47:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34397 states to 34397 states and 39369 transitions. [2020-10-26 22:47:30,526 INFO L78 Accepts]: Start accepts. Automaton has 34397 states and 39369 transitions. Word has length 496 [2020-10-26 22:47:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:30,526 INFO L481 AbstractCegarLoop]: Abstraction has 34397 states and 39369 transitions. [2020-10-26 22:47:30,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 34397 states and 39369 transitions. [2020-10-26 22:47:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-26 22:47:30,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:30,549 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:30,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 22:47:30,549 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:30,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1074144858, now seen corresponding path program 1 times [2020-10-26 22:47:30,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:30,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066854027] [2020-10-26 22:47:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:30,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:31,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking...